MrGreen® septic booster is an all natural organic micronutrient-based liquid concentrate to reactivate slow or failing septic systems and quickly eliminate odors, reduce standing water and drain field back-ups. Septic booster can also be used as an ongoing maintenance program to ensure a healthy and active septic system. MrGreen® does not contain bacteria, enzymes, harsh chemicals, alcohol or masking agents and as such is safe for humans, animals and the environment.